颗粒阻尼技术在离心风机降噪中的应用研究  

Study of Particle Damping Technology in Noise Reduction of Centrifugal Fan

作　　者：陈金球 陈启明 Jin-qiu Chen;Qi-ming Chen(Tongling Nonferrous Metals Group Co.,Ltd.,Jinguan Copper Branch;Hefei General Machinery Research Institute Co.,Ltd.,Anhui Key Laboratory of Composite Technology for General Machinery,Anhui Province Key Laboratory of Compressor Technology)

机构地区：[1]铜陵有色金属集团公司金冠铜业分公司 [2]合肥通用机械研究院有限公司,安徽省通用机械复合材料技术重点实验室,压缩机技术国家重点实验室

出　　处：《风机技术》2019年第3期63-66,共4页Chinese Journal of Turbomachinery

基　　金：安徽省重点研究与开发计划项目(1704a0902005)

摘　　要：应用颗粒阻尼技术对离心风机进行降噪处理。在风机蜗壳外侧、后侧和前盖板内侧设计结构空腔以填充颗粒,填充率为70%左右,填充颗粒以材质和直径的不同分为四种。经过对噪声数据进行采集处理,对比各填充方案的降噪效果以及在额定工况下各测点的降噪效果,得出颗粒阻尼技术可以有效降低风机振动噪声的结论,并选出了最佳填充方案。The particle damping technology is applied to reduce the noise of centrifugal fan. The structural cavity is designed around the volute and inside the front cover. 70%of the space of the cavity is filled with four different kinds of particle and different diameter. Comparing the noise reduced effect of different case and the different test conditions by noise data acquisition and processing,the noise is reduced greatly by the particle damping technology. The best particle damping technology is chosen.

关 键 词：离心风机 降噪 颗粒阻尼 结构空腔 声学传感器 频谱仪 

分 类 号：TH432[机械工程—机械制造及自动化]